Cellular Phone Voice Circuit between Multi-display and Navigation ECU

DESCRIPTION

This circuit sends a cellular phone voice signal from the multi-display to the navigation ECU.

WIRING DIAGRAM

INSPECTION PROCEDURE

1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - MULTI-DISPLAY)

1. Disconnect the navigation ECU connector N4 and multi-display connector M4.

2. Measure the resistance according to the value(s) in the table below.

   Resistance:

   Tester connection	Condition	Specified condition
   VOI+ - VOI+	Always	Below 1 Ω
   IVO- - VOI-	Always	Below 1 Ω
   VOI+ - Body ground	Always	10 kΩ or higher
   IVO- - Body ground	Always	10 kΩ or higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL